ARM: 7522/1: arch_timers: register a time/cycle counter

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Some subsystems (KVM for example) need access to a cycle counter.
In the KVM case, this is used to measure the time delta between
host and guest in order to accurately generate timer events for
the guest.

Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

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Marc Zyngier 2012-09-07 18:09:58 +01:00 • committed by Russell King

parent f48b5f1279

commit a1b2dde704

2 changed files with 32 additions and 0 deletions

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7

arch/arm/include/asm/arch_timer.h

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25

arch/arm/kernel/arch_timer.c

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